After the Raiders' first exhibition game, truly a clunker of a performance, Davis appeared to be angry. That's a sign that his patience is stretched thin as his team enters its third season under general manager Reggie McKenzie and coach Dennis Allen.

Those two cast their fate with Schaub and Carr. If neither pans out, even because their surrounding cast is weak, the coach and GM will be fired, maybe as a package deal.

A Schaub/Carr flop, especially if combined with Manziel's success, would cause Davis to question the basic philosophy of his brain trust. They passed on Manziel because they preferred to draft a franchise-type defensive player, but also because Johnny Manziel is Johnny Manziel.

When McKenzie and Allen were hired, they talked enthusiastically about stocking the roster with solid citizens, family men, players with strong religious faith. They have relaxed their standards somewhat out of necessity, but I believe they were wary of Manziel's rep.

And his playing style. McKenzie and Allen favor a conventional drop-back quarterback over a ramblin', gamblin' man. Remember Terrelle Pryor?

Davis is very different from his late father, but Mark has Raiders blood; he admires the rebels who don't fit conventional molds, on or off the field. Al Davis would have drafted Manziel and told the Raiders' coach, "He's a great quarterback. Deal with it."

Mark Davis might have preferred Manziel, but he stood aside and let McKenzie make the pick. Maybe it will all lead to a return of the greatness of the Raiduhs. But while it all plays out, keep an eye on Johnny Football.